A vessel experienced a cargo pump bearing failure when she was discharging cargo at the discharge port. The pump was out of use and this resulted in moving out the vessel from the berth. Cargo was transferred from one tank to other after which the vessel was re-berthed for discharging the remaining cargo.
Cause of failure
The pumps were recently overhauled during the vessel docking. The bearings and seals were renewed. Upon investigation for the cause of bearing failure by the technicians, it was found that the grease which was used for the bearing was of not the correct grade. The vessel was using normal bearing grease, but the maker recommended high viscosity ones.
Used grease properties: Viscosity at 400C 120 mm2/sec. Operating temperature -30 to 1200C.
posted 26 Apr '18, 08:28